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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 18 |
| 5 | 125 |
| 6 | 250 |
| 7 | 1125 |
| 8 | 2250 |
| 9 | 2401 |
| 10 | 4802 |
| 11 | 21609 |
| 12 | 43218 |
| 13 | 161051 |
| 14 | 300125 |
| 15 | 322102 |
| 16 | 600250 |
| 17 | 1449459 |
| 18 | 2701125 |
| 19 | 2898918 |
| 20 | 4826809 |
| 21 | 5402250 |
| 22 | 9653618 |
| 23 | 20131375 |
| 24 | 40262750 |
| 25 | 43441281 |
| 26 | 86882562 |
| 27 | 181182375 |
| 28 | 362364750 |
| 29 | 386683451 |
| 30 | 410338673 |
| 31 | 603351125 |
| 32 | 773366902 |
| 33 | 820677346 |
[1,2,9,18,125,250,1125,2250,2401,4802,21609,43218, 161051,300125,322102,600250,1449459,2701125, 2898918,4826809,5402250,9653618,20131375,40262750, 43441281,86882562,181182375,362364750,386683451, 410338673,603351125,773366902,820677346] |